D7 Track-Type Tractor Electrohydraulic Systems Solenoid Valve (Switch Controlled)

Table 1
Implement ECM (MID 82)
J1939	CDL	Code Description	System Response
	882-3	Implement Lockout Solenoid (Switched): Voltage Above Normal	The pilot supply cannot be shut off.
	882-5	Implement Lockout Solenoid (Switched): Current Below Normal	All implement functions are disabled.
	882-6	Implement Lockout Solenoid (Switched): Current Above Normal	All implement functions are disabled.

Solenoids are used to shutoff, release, distribute, or mix fluids on the machine. Generally, multiple solenoids are located together on a manifold. The solenoid converts electrical energy into magnetic energy, moving a spool located inside the housing of the valve. A spring is used to hold the spool in position until the solenoid is energized.

The magnetic force that acts on the valve spool is created when a coil inside the solenoid is energized.

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Illustration 1	g06504178
Schematic of Solenoid Valve (Switch Controlled) connections

The preceding diagram is a simplified schematic of the connections for the PWM sensors. The schematic is electrically correct. However, not all the possible harness connectors are shown. Refer to the latest revision of the electrical schematic for the specific machine being serviced for the complete schematic.

Machine ECM

The following is a list of Diagnostic Trouble Codes (DTCs) that are associated with a solenoid that is activated by a manual switch or a relay.

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Table 2
Machine ECM (MID 39)
J1939	CDL	Code Description	System Response
	681-3	Parking Brake Solenoid: Voltage Above Normal	The Parking Brake Will Not Disengage. The Park Brake Applies
	681-5	Parking Brake Solenoid: Current Below Normal	The Parking Brake Will Not Disengage.
	681-6	Parking Brake Solenoid: Current Above Normal	The Parking Brake Will Not Disengage.
	2596-3	Brake Pressure Modulation Solenoid: Voltage Above Normal	Brakes will apply.
	2596-5	Brake Pressure Modulation Solenoid: Current Below Normal	Brakes will apply.
	2596-6	Brake Pressure Modulation Solenoid: Current Above Normal	Brakes will apply.
	2596-13	Brake Pressure Modulation Solenoid: Out of Calibration	Will cause out of calibration diagnostic code to be active.

The magnetic force that acts on the valve spool is created when a coil inside the solenoid is energized.

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Illustration 2	g06586832
Schematic of Solenoid Valve (Switch Controlled) connections

The preceding diagram is a simplified schematic of the connections for the solenoid valve (switch controlled). The schematic is electrically correct. However, not all the possible harness connectors are shown. Refer to the latest revision of the electrical schematic for the specific machine being serviced for the complete schematic.

Diagnostic Trouble Code Procedure

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Table 3
Required Tools
Tool	Part Number	Description	Qty
T1	146-4080⁽¹⁾	Digital Multimeter Group	1
	8T-3224	Needle Tip Group	1
	7X-1710	Multimeter Probe Group	1
	8T-8726	Cable Assembly (Three Pin) (3-Pin Breakout)	1
T2	JERD2129	Cat^® Electronic Technician (Cat ET)	1
		Windows-based PC	1
	538-5051	Communication Adapter Gp	1
T3	6V-4148	Connector Repair Kit (Sure Seal)	1
T4	190-8900	Connector Field Repair Kit (Deutsch)	1
T5	175-3700	Connector Repair Kit Deutsch DT	1

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⁽¹⁾	This multimeter can use an RS232C cable to connect to a Laptop computer or Dataview tool gp for troubleshooting.

Prior to beginning this procedure, inspect the harness connectors that are involved in this circuit. Poor connections can often be the cause of a problem in an electrical circuit. Verify that all connections in the circuit are clean, secure, and in good condition. Check the wiring for pinch points or abrasions. Look for and repair areas that indicate wires are exposed. If a problem with a connection is found, correct the problem and verify that this diagnostic code is active before performing a troubleshooting procedure.

Identify the active FMI code associated with the components.
Determine which code is present and use the list below to determine which procedure to follow.

FMI 3 diagnostic code, proceed to "FMI 3".
FMI 5 diagnostic code, proceed to "FMI 5".
FMI 6 diagnostic code, proceed to "FMI 6".
FMI 13 diagnostic code, proceed to "FMI 13".

FMI 3

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Table 4
Check The Switch
Troubleshooting Test Steps	Values	Results
1. Turn the key start switch and the disconnect switch to the OFF position. 2. Disconnect the switch from the machine harness. Place the switch in the UNLOCKED position. 3. At the back of the switch, measure the resistance between contacts "B" and "C"	The resistance measurement is less than 5 Ω.	Results: The resistance measurement is less than 5 Ω. The switch is operating properly. Proceed to "Check The Signal Circuit For An Open" Table 5. Results: The resistance measurement is greater than 5K Ω. The switch has failed. Repair: Repeat this Test Step to verify that the switch has failed. Toggle the switch state while observing the resistance measurement. If the resistance measurement is greater than 5K Ω, the switch has failed. Replace the switch. Proceed to "Check If The Diagnostic Code Remains" Table 7.

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Table 5
Check The Signal Circuit For An Open
Troubleshooting Test Steps	Values	Results
1. The key start switch and the disconnect switch remain in the OFF position. 2. Disconnect the machine harness connectors from the ECM and remove the relay. 3. Reconnect the switch to the machine harness. Place the switch in the UNLOCKED position. 4. At the ECM harness connector, insert a multimeter probe at the switch signal wire contact. 5. At the harness connector for the relay, insert a multimeter probe at the relay coil contact. 6. Measure the resistance between the signal contact and relay coil contact.	The resistance measurement is less than 5 Ω.	Results: The resistance measurement is less than 5 Ω. The wiring harness is correct. Proceed to "Check The Signal Circuit For A Short" Table6. Results: The resistance measurement is greater than 5K Ω. There is an open in the harness. Repair: Repair or replace the machine harness. Proceed to "Check If The Diagnostic Code Remains" Table 7.

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Table 6
Check The Signal Circuit For A Short
Troubleshooting Test Steps	Values	Results
1. The key start switch and the disconnect switch remain in the OFF position. 2. The ECM harness connectors and relay remain disconnected. 3C. At the ECM harness connector, measure the resistance between the switch signal circuit and all the other contacts that are used in the ECM.	Each resistance measurement is greater than 5K Ω.	Results: Each resistance measurement is greater than 5K Ω. Proceed to "Check If The Diagnostic Code Remains" Table 7. Results: A resistance measurement is less than 5 Ω. Repair: A short exists in the harness between the signal circuit and the circuit with the low-resistance measurement. Repair or replace the machine harness. Note: A resistance that is greater than 5 Ω but less than 5K Ω would indicate a loose connection or a corroded connection in the circuit. A resistance measurement that is greater than 5K Ω would indicate an open in the circuit. Proceed to "Check If The Diagnostic Code Remains" Table 7.

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Table 7
Check If The Diagnostic Code Remains
Troubleshooting Test Steps	Values	Results
1. Reconnect all harness connectors. Return machine to normal operating condition. 2. Turn the key start switch and the disconnect switch ON. 3. Clear all diagnostic codes. 4. Operate the machine. 5. Stop the machine and engage the safety lock. 6. Check if the diagnostic code is active.	The diagnostic code is no longer present.	Results: The diagnostic code does not exist currently. The initial diagnostic code may have been caused by poor electrical connection or short at one of the harness connections. Resume machine operation. STOP. Results: The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the ECM may require replacement. Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. For more information refer to the "ECM - Replace" section if the ECM needs to be replaced. STOP.

FMI 5

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Table 8
Check The Solenoid
Troubleshooting Test Steps	Values	Results
1. Turn the start switch and the disconnect switch OFF. 2. Disconnect the solenoid from the machine harness. 3. At the harness connector for the solenoid, install a jumper wire between contact 1 and contact 2. 4. Turn the start switch and the disconnect switch ON. Do not start the engine.	The FMI 5 diagnostic code changes to an FMI 6 after the jumper wire is installed.	Result: The harness is correct. The FMI 5 diagnostic code changes to an FMI 6 when the jumper wire is installed. The solenoid has failed. Repair: Replace the solenoid. Proceed to "Check If The Diagnostic Code Remains" Table 10. Result: The diagnostic code remains active. Proceed to "Check The Harness For An Open" Table 9.

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Table 9
Check The Harness For An Open
Troubleshooting Test Steps	Values	Results
1. Turn the start switch and the disconnect switch OFF. 2. Disconnect the harness connectors from the ECM. 3. The jumper wire remains installed. 4. At the machine harness connector for the ECM, measure the resistance between the signal circuit and return circuit. Note: For solenoids that return to ground, measure the resistance between the signal circuit at the ECM harness connector and frame ground.	Each reading is less than 5 Ω.	Result: The reading is less than 5 Ω. The harness is correct. Proceed to "Check If The Diagnostic Code Remains" Table 10. Result: The reading is greater than 5K Ω. The open is in the signal circuit or the return circuit. Repair: Repair or replace the machine harness. Note: A resistance that is greater than 5 Ω but less than 5K Ω would indicate a loose connection or a corroded connection in the circuit. A resistance measurement that is greater than 5K Ω would indicate an open in the circuit. Proceed to "Check If The Diagnostic Code Remains" Table 10.

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Table 10
Check If The Diagnostic Code Remains
Troubleshooting Test Steps	Values	Results
1. Reconnect all harness connectors. Return machine to normal operating condition. 2. Turn the start switch and the disconnect switch ON. 3. Clear all diagnostic codes. 4. Operate the machine. 5. Stop the machine and engage the safety. 6. Check if the diagnostic code is active.	The diagnostic code is no longer present.	Result: The diagnostic code does not exist currently. The initial diagnostic code may have been caused by poor electrical connection or short at one of the harness connections. Resume machine operation. STOP. Result: The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the ECM may require replacement. Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. For more information refer to the "ECM - Replace" section if the ECM needs to be replaced. STOP.

FMI 6

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Table 11
Check the Relay
Troubleshooting Test Steps	Values	Results
1. Turn the key start switch and the disconnect switch to the OFF position. 2. Remove the relay from the harness. 3. Turn the disconnect switch and the key start switch to the ON position. 4. Observe the status of the diagnostic code.	The diagnostic code is no longer active when the relay is disconnected.	Results: The diagnostic code is no longer active when the relay is disconnected. The circuit is correct. The relay has failed. Repair: Repeat this Test Step to verify the relay failure. Replace the relay. Proceed to "Check If The Diagnostic Code Remains" Table 13. Results: The diagnostic code remains active. Proceed to "Check The Energize Circuit Of The Relay For A Short To Ground" Table 12.

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Table 12
Check The Energize Circuit Of The Relay For A Short To Ground
Troubleshooting Test Steps	Values	Results
1. Turn the key start switch and the disconnect switch to the OFF position. 2. The relay remains disconnected from the machine harness. 3. Disconnect the harness connectors from the ECM. 4. Place the switch in the UNLOCKED position. 5. At the ECM harness connectors, measure the resistance between the relay signal contact and frame ground.	The resistance measurement is greater than 5K Ω.	Results: The resistance measurement is greater than 5K Ω. Proceed to "Check If The Diagnostic Code Remains" Table 13. Results: The resistance measurement is not greater than 5K Ω. There is a short in the machine harness. Repair: Repair or replace the machine harness. Proceed to "Check If The Diagnostic Code Remains" Table 13.

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Table 13
Check If The Diagnostic Code Remains
Troubleshooting Test Steps	Values	Results
1. Reconnect all harness connectors. Return machine to normal operating condition. 2. Turn the key start switch and the disconnect switch to the ON position. 3. Clear all diagnostic codes. 4. Operate the machine. 5. Stop the machine and engage the safety lock. 6. Check if the diagnostic code is active.	The diagnostic code is no longer present.	Results: The diagnostic code does not exist currently. The initial diagnostic code may have been caused by poor electrical connection or short at one of the harness connections. Resume machine operation. STOP. Results: The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the ECM may require replacement. Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. For more information refer to the "ECM - Replace" section if the ECM needs to be replaced. STOP.

FMI 13

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Table 14
Check The Calibration
Troubleshooting Test Steps	Values	Results
1. Perform the calibration procedure for the solenoid. Refer to the calibration procedure in Testing and Adjusting for this machine. 2. Observe the status of the diagnostic code.	The calibration was successful and the code is no longer active.	Result: The diagnostic code is no longer active. The calibration corrected the condition that caused the diagnostic code. STOP. Result: The FMI 13 Code is active. The diagnostic code has not been corrected. Repair: Verify that the correct software has been flashed into the ECM, or that the correct ECM is installed on the machine. Then repeat the calibration. Result: The diagnostic trouble code has not been corrected. If the diagnostic code has not been corrected after performing the procedure a second time, the ECM may require replacement. Prior to replacing the ECM, always contact the Technical Communicator at your dealership for possible consultation with AVSpare. This consultation may effect repair time. For more information refer to the "ECM - Replace" section if the ECM needs to be replaced. STOP.